Match each item in Column-I with one in Column-II and select the correct match from the codes given:
Column-I Column-II
A. Petromyzon P. A jawless vertebrate
B. Icthyophis Q. A limbless amphibian
C. Struthio R. A flightless bird

Codes
A B C
1. Q R P
2. Q P R
3. P Q R
4. P R Q
Subtopic:  Phylum Chordata | Comparative study of Cartilagenous & Bony Fishes | Study of Amphibians | Study of Aves & Mammals |
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Level 1: 80%+
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Which external feature is characteristic of the morphology of a frog?
1. Dry and scaly skin
2. Moist skin without scales and with mucous glands
3. Long tail and fin-like structures
4. Four equal-sized limbs suitable for flying
Subtopic:  Study of Amphibians |
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Level 1: 80%+
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